SunshinePHP Developer Conference 2015

maxdb_num_fields

maxdb_result::field_count

(PECL maxdb >= 1.0)

maxdb_num_fields -- maxdb_result::field_countGet the number of fields in a result

Descrição

Estilo procedural

int maxdb_num_fields ( resource $result )

Estilo orientado à objeto

int $maxdb_result->field_count;

maxdb_num_fields() returns the number of fields from specified result set.

Valor Retornado

The number of fields from a result set

Exemplos

Exemplo #1 Estilo orientado à objeto

<?php
$maxdb 
= new maxdb("localhost""MONA""RED""DEMODB");

/* check connection */
if (maxdb_connect_errno()) {
   
printf("Connect failed: %s\n"maxdb_connect_error());
   exit();
}

if (
$result $maxdb->query("SELECT * FROM hotel.city ORDER BY zip")) {

   
/* determine number of fields in result set */
   
$field_cnt $result->field_count;

   
printf("Result set has %d fields.\n"$field_cnt);

   
/* close result set */
   
$result->close();
}

/* close connection */
$maxdb->close();
?>

Exemplo #2 Estilo procedural

<?php
$link 
maxdb_connect("localhost""MONA""RED""DEMODB");

/* check connection */
if (maxdb_connect_errno()) {
   
printf("Connect failed: %s\n"maxdb_connect_error());
   exit();
}

if (
$result maxdb_query($link"SELECT * FROM hotel.city ORDER BY zip")) {

   
/* determine number of fields in result set */
   
$field_cnt maxdb_num_fields($result);

   
printf("Result set has %d fields.\n"$field_cnt);

   
/* close result set */
   
maxdb_free_result($result);
}

/* close connection */
maxdb_close($link);
?>

O exemplo acima irá imprimir algo similar à:

Result set has 3 fields.

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